qt network dialog: use intenum for columns
qt network dialog: use intenum for columns

pooler/electrum-ltc,vialectrum/vialectrum,wakiyamap/electrum-mona,fujicoin/electrum-fjc,pooler/electrum-ltc,wakiyamap/electrum-mona,spesmilo/electrum,wakiyamap/electrum-mona,pooler/electrum-ltc,wakiyamap/electrum-mona,spesmilo/electrum,vialectrum/vialectrum,vialectrum/vialectrum,fujicoin/electrum-fjc,pooler/electrum-ltc,spesmilo/electrum,neocogent/electrum,spesmilo/electrum,neocogent/electrum,fujicoin/electrum-fjc,neocogent/electrum